In the Linux kernel, the following vulnerability has been resolved: misc: alcor_pci: fix null-ptr-deref when there is no PCI bridge There is an issue with the ASPM(optional) capability checking function. A device might be attached to root complex directly, in this case, bus->self(bridge) will be NULL, thus priv->parent_pdev is NULL. Since alcor_pci_init_check_aspm(priv->parent_pdev) checks the PCI link's ASPM capability and populate parent_cap_off, which will be used later by alcor_pci_aspm_ctrl() to dynamically turn on/off device, what we can do here is to avoid checking the capability if we are on the root complex. This will make pdev_cap_off 0 and alcor_pci_aspm_ctrl() will simply return when bring called, effectively disable ASPM for the device. [ 1.246492] BUG: kernel NULL pointer dereference, address: 00000000000000c0 [ 1.248731] RIP: 0010:pci_read_config_byte+0x5/0x40 [ 1.253998] Call Trace: [ 1.254131] ? alcor_pci_find_cap_offset.isra.0+0x3a/0x100 [alcor_pci] [ 1.254476] alcor_pci_probe+0x169/0x2d5 [alcor_pci]

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-988935 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    misc: alcor_pci: fix null-ptr-deref when there is no PCI bridge

    There is an issue with the ASPM(optional) capability checking function.
    A device might be attached to root complex directly, in this case,     bus->self(bridge) will be NULL, thus priv->parent_pdev is NULL.
    Since alcor_pci_init_check_aspm(priv->parent_pdev) checks the PCI link's     ASPM capability and populate parent_cap_off, which will be used later by     alcor_pci_aspm_ctrl() to dynamically turn on/off device, what we can do     here is to avoid checking the capability if we are on the root complex.
    This will make pdev_cap_off 0 and alcor_pci_aspm_ctrl() will simply     return when bring called, effectively disable ASPM for the device.

    [    1.246492] BUG: kernel NULL pointer dereference, address: 00000000000000c0     [    1.248731] RIP: 0010:pci_read_config_byte+0x5/0x40     [    1.253998] Call Trace:
    [    1.254131]  ? alcor_pci_find_cap_offset.isra.0+0x3a/0x100 [alcor_pci]     [    1.254476]  alcor_pci_probe+0x169/0x2d5 [alcor_pci]

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-986689 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    misc: alcor_pci: fix null-ptr-deref when there is no PCI bridge

    There is an issue with the ASPM(optional) capability checking function.
    A device might be attached to root complex directly, in this case,     bus->self(bridge) will be NULL, thus priv->parent_pdev is NULL.
    Since alcor_pci_init_check_aspm(priv->parent_pdev) checks the PCI link's     ASPM capability and populate parent_cap_off, which will be used later by     alcor_pci_aspm_ctrl() to dynamically turn on/off device, what we can do     here is to avoid checking the capability if we are on the root complex.
    This will make pdev_cap_off 0 and alcor_pci_aspm_ctrl() will simply     return when bring called, effectively disable ASPM for the device.

    [    1.246492] BUG: kernel NULL pointer dereference, address: 00000000000000c0     [    1.248731] RIP: 0010:pci_read_config_byte+0x5/0x40     [    1.253998] Call Trace:
    [    1.254131]  ? alcor_pci_find_cap_offset.isra.0+0x3a/0x100 [alcor_pci]     [    1.254476]  alcor_pci_probe+0x169/0x2d5 [alcor_pci]

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - misc: alcor_pci: fix null-ptr-deref when there is no PCI bridge There is an issue with the ASPM(optional)     capability checking function. A device might be attached to root complex directly, in this case,     bus->self(bridge) will be NULL, thus priv->parent_pdev is NULL. Since     alcor_pci_init_check_aspm(priv->parent_pdev) checks the PCI link's ASPM capability and populate     parent_cap_off, which will be used later by alcor_pci_aspm_ctrl() to dynamically turn on/off device, what     we can do here is to avoid checking the capability if we are on the root complex. This will make     pdev_cap_off 0 and alcor_pci_aspm_ctrl() will simply return when bring called, effectively disable ASPM     for the device. [ 1.246492] BUG: kernel NULL pointer dereference, address: 00000000000000c0 [ 1.248731]     RIP: 0010:pci_read_config_byte+0x5/0x40 [ 1.253998] Call Trace: [ 1.254131] ?     alcor_pci_find_cap_offset.isra.0+0x3a/0x100 [alcor_pci] [ 1.254476] alcor_pci_probe+0x169/0x2d5     [alcor_pci] (CVE-2021-47333)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:2183-1 advisory.

    The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:

    - CVE-2021-47497: Fixed shift-out-of-bound (UBSAN) with byte size cells (bsc#1225355).
    - CVE-2021-47500: Fixed trigger reference couting (bsc#1225360).
    - CVE-2021-47383: Fiedx out-of-bound vmalloc access in imageblit (bsc#1225208).
    - CVE-2021-47511: Fixed negative period/buffer sizes (bsc#1225411).
    - CVE-2024-27398: Fixed use-after-free bugs caused by sco_sock_timeout (bsc#1224174).
    - CVE-2023-4244: Fixed a use-after-free in the nf_tables component, which could be exploited to achieve     local privilege escalation (bsc#1215420).
    - CVE-2023-4244: Fixed a use-after-free in the nf_tables component, which could be exploited to achieve     local privilege escalation (bsc#1215420).
    - CVE-2023-1829: Fixed a use-after-free vulnerability in the control index filter (tcindex) (bsc#1210335).
    - CVE-2021-47378: Destroy cm id before destroy qp to avoid use after free (bsc#1225201).
    - CVE-2021-47496: Fix flipped sign in tls_err_abort() calls (bsc#1225354)
    - CVE-2021-47402: Protect fl_walk() with rcu (bsc#1225301)
    - CVE-2022-48673: kABI workarounds for struct smc_link (bsc#1223934).
    - CVE-2023-52871: Handle a second device without data corruption (bsc#1225534)
    - CVE-2024-26828: Fix underflow in parse_server_interfaces() (bsc#1223084).
    - CVE-2024-27413: Fix incorrect allocation size (bsc#1224438).
    - CVE-2023-52840: Fix use after free in rmi_unregister_function() (bsc#1224928).
    - CVE-2021-47261: Fix initializing CQ fragments buffer (bsc#1224954)
    - CVE-2021-47254: Fix use-after-free in gfs2_glock_shrink_scan (bsc#1224888).
    - CVE-2023-52655: Check packet for fixup for true limit (bsc#1217169).
    - CVE-2023-52686: Fix a null pointer in opal_event_init() (bsc#1065729).


Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:2185-1 advisory.

    The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:

    - CVE-2021-47378: Destroy cm id before destroy qp to avoid use after free (bsc#1225201).
    - CVE-2021-47496: Fix flipped sign in tls_err_abort() calls (bsc#1225354)
    - CVE-2021-47402: Protect fl_walk() with rcu (bsc#1225301)
    - CVE-2022-48673: kABI workarounds for struct smc_link (bsc#1223934).
    - CVE-2023-52871: Handle a second device without data corruption (bsc#1225534)
    - CVE-2024-26828: Fix underflow in parse_server_interfaces() (bsc#1223084).
    - CVE-2021-47497: Fixed shift-out-of-bound (UBSAN) with byte size cells (bsc#1225355).
    - CVE-2021-47500: Fixed trigger reference couting (bsc#1225360).
    - CVE-2024-27413: Fix incorrect allocation size (bsc#1224438).
    - CVE-2021-47383: Fiedx out-of-bound vmalloc access in imageblit (bsc#1225208).
    - CVE-2021-47511: Fixed negative period/buffer sizes (bsc#1225411).
    - CVE-2023-52840: Fix use after free in rmi_unregister_function() (bsc#1224928).
    - CVE-2021-47261: Fix initializing CQ fragments buffer (bsc#1224954)
    - CVE-2021-47254: Fix use-after-free in gfs2_glock_shrink_scan (bsc#1224888).
    - CVE-2024-27398: Fixed use-after-free bugs caused by sco_sock_timeout (bsc#1224174).
    - CVE-2024-26921: Preserve kabi for sk_buff (bsc#1223138).
    - CVE-2023-52655: Check packet for fixup for true limit (bsc#1217169).
    - CVE-2023-4244: Fixed a use-after-free in the nf_tables component, which could be exploited to achieve     local privilege escalation (bsc#1215420).
    - CVE-2023-4244: Fixed a use-after-free in the nf_tables component, which could be exploited to achieve     local privilege escalation (bsc#1215420).
    - CVE-2023-1829: Fixed a use-after-free vulnerability in the control index filter (tcindex) (bsc#1210335).
    - CVE-2023-52686: Fix a null pointer in opal_event_init() (bsc#1065729).


Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
272947	Unity Linux 20.1070a Security Update: kernel (UTSA-2025-988935)	Nessus	Unity Linux Local Security Checks	medium
268361	Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986689)	Nessus	Unity Linux Local Security Checks	medium
247726	Linux Distros Unpatched Vulnerability : CVE-2021-47333	Nessus	Misc.	medium
200932	SUSE SLES15 Security Update : kernel (SUSE-SU-2024:2183-1)	Nessus	SuSE Local Security Checks	critical
200930	SUSE SLES15 Security Update : kernel (SUSE-SU-2024:2185-1)	Nessus	SuSE Local Security Checks	critical

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CVE-2021-47333

medium

Tenable Plugins

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critical